Matter and Measurement
This quantity measures how much matter something contains.
What is mass?
This particle determines an atom's identity.
What is the proton?
A bond where electrons are shared.
What is a covalent bond?
What is the law of conservation of mass?
The number 6.022 X 10 ^23
What is Avogadro's Number?
This state of matter has a definite volume but no definite shape.
What is liquid?
What are isotopes?
Ionic bonds naturally form this kind of structure, not molecules.
What is crystal structure?
A substance that speeds up a reaction without being consumed.
What is a catalyst?
What is molar mass?
Digits that are known for sure, plus one estimated digit.
What are significant figures?
Vertical columns on the periodic table are called this.
What are groups or families?
Name the compound Na2SO4
What is sodium sulfate?
The number of atoms of each element must be the same on both sides of a reaction to make this.
What is balanced?
In a reaction, this reactant runs out first and stops the reaction.
What is the limiting reactant?
This is the formula for density.
What is mass divided by volume?
An atom that gains electrons becomes this type of ion.
What is an anion?
This is the name for a charged group of covalently bonded atoms that acts as one unit.
What is a polyatomic ion?
A + BC ---> AC + B is this type of reaction.
What is a single-displacement reaction?
These numbers in a chemical equation tell you how many molecules or formula units you have.
What are coefficients?
This metric prefix means 1/1,000,000.
What is micro-?
All forms of matter try to stay in their ______ possible energy state.
What is lowest?
A covalent bond in which electrons are shared unevenly.
What is a polar covalent bond?
A reaction that absorbs heat from the surroundings.
What is an endothermic reaction?
What is stoichiometry?